Simple typo fix .

Change-Id: I72c5ea73cd0a3625b94843a11abe9e5fcdaa55d5
diff --git a/ip-allocator/Dockerfile b/ip-allocator/Dockerfile
index ba7155d..c547f85 100644
--- a/ip-allocator/Dockerfile
+++ b/ip-allocator/Dockerfile
@@ -12,7 +12,7 @@
 ## See the License for the specific language governing permissions and
 ## limitations under the License.
 FROM golang:alpine
-MAINTAINER Open Networking Labratory <info@onlab.us>
+MAINTAINER Open Networking Laboratory <info@onlab.us>
 
 RUN apk --update add git